HiRes is intended for artwork with smaller details or halftones. Typically used for hard surfaces such as glass and metal. Hires has a higher thread count so the green residue clings to the mesh making it harder to clean after exposure to light source. More pressure is needed when applying paint or ink. Not all paints are suitable for Hires, such as ceramic or metallic paints; the pigments are too large and may not go through the mesh. It is important to test the paint first. You can achieve superb details with HiRes and the mesh transferred to the paint is less visible on hard surfaces.